(Ternary liquid+liquid) equilibria for (water+acetone+α-pinene, or β-pinene, or limonene) mixtures

Separation of carvone by batch distillation from the mixture obtained from limonene oxidation

“…On the other hand, the distillation at atmospheric conditions after collecting the second fraction resulted in the formation of an immiscible L-L mixture in the reboiler because of the presence of a large amount of water and terpenes, as was predicted by the ternary L-L aqueous mixtures, Figure 4. Reports of the liquid-liquid equilibrium experimental data of the ternary system containing water + acetone + limonene at 298.15 K, and its simulated correlation by the modified UNIQUAC model [16], are in agreement with our simulation results. Thus, it is expected that this mixture has the largest amount of water to be removed from the reboiler.…”

“…Likewise, the activity coefficient model NRTL was selected to model the liquid phase, as the simulation of the bubble points was similar, except by the ideal model. Although there are intrinsic differences among the selected thermodynamic models [19], there are several studies that properly correlate the physical and thermodynamic properties of mixtures containing terpenes that were simulated by models such as UNIQUAC, WILSON, UNIF-DMD, NRTL, among others [16,[20][21][22][23]. 1 Feed composition established from the results obtained in a flash evaporation of the reaction mixture to remove volatiles.…”

Liquid−Liquid Equilibria of Water + Pentan-1-ol + 2,6,6-Trimethylbicyclo[3.1.1]hep-2-ene or 6,6-Dimethyl-2-methylenebicyclo[3.1.1]heptane at (293.15, 303.15, 313.15, and 323.15) K

“…In the solvent extraction, methanol and ethanol are often used because pinenes can be easily soluble in the alcohols but insoluble in water. A literature survey shows that there are some works on liquid−liquid equilibria (LLE) data for systems containing pinenes, water, and some alcohols or acetone. − In order to examine multicomponent phase equilibrium behaviors of α-pinene and β-pinene in the (water + pentan-1-ol) mixtures and influence of temperature on the distribution of pentan-1-ol between aqueous and organic phases, we measured the tie-line compositions for the ternary systems of (water + pentan-1-ol + α-pinene) and (water + pentan-1-ol + β-pinene) mixtures at (293.15, 303.15, 313.15, and 323.15) K. The experimental LLE results were correlated by means of the extended and modified UNIQUAC models , including both binary and ternary parameters coming from multicomponent intermolecular interactions. The vapor−liquid equilibria (VLE) data for the binary systems of (pentan-1-ol + α-pinene or β-pinene) and mutual solubility data for the binary systems of (water + α-pinene or + β-pinene) have been available from the literatures. , Mutual solubility data for the binary system of (water + pentan-1-ol) were measured in this work.…”

(Liquid + liquid) equilibria for (water + 1-propanol or acetone + β-citronellol) at different temperatures

“…A survey of the literature on the (liquid + liquid) equilibrium systems containing monoterpenoid (or monoterpene) and alcohol, ternary (linalool + ethanol + water), and (limonene + ethanol + water) systems from T = (293.15 to 323.15) K were studied by Cháfer et al [2,5]. The (water + ethanol + citral) multicomponent system at T = 303.15 K by Gramajo de Doz [6]; ternary LLE systems (limonene + linalool + 1,2-propanediol or 1,3-propanediol) from T = (298.15 to 318.15) K by Arce et al [7]; (liquid + liquid) equilibrium data for the system (limonene + carvone + ethanol + water) at T = 298.2 K by Oliveira et al [8]; ternary LLE (water + acetone + apinene, or b-pinene, or limonene) mixtures by Li and Tamura [9]; and ternary (a-pinene + D 3 -carene) polar compound systems [10] by Antosik and Stryjek, are available in the literature. Furthermore, ternary (water + terpene + 1-propanol or 1-buthanol) systems at T = 298.15 K [11]; (liquid + liquid) phase behaviour of geraniol in aqueous alcohol mixtures [12]; and ternary LLE for bcitronellol in aqueous alcohol at different temperatures [13] been reported previously.…”